If \( f: R \rightarrow R \) defined by \( f(x)=3 x-5 \), then \( f^{-1}(\{-1 \),
\( -2,1,2\})= \...
If \( f: R \rightarrow R \) defined by \( f(x)=3 x-5 \), then \( f^{-1}(\{-1 \),
\( -2,1,2\})= \)
(a) \( \left\{1, \frac{4}{3}, \frac{7}{3}\right\} \)
(b) \( \left\{-1,2, \frac{-4}{3}\right\} \)
(c) \( \left\{1,2, \frac{4}{3}, \frac{7}{3}\right\} \)
(d) \( \{1,2,-1,-2\} \)
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